Stellar Industries SLA470 - Manual (Page 7)

#10) Power On/Off Mode Select
This selector determines how the amplifier will be switched on and off.
Normal provides completely manual operation from the front panel Power switch.
Auto-On senses the presence of an input signal at Input #1 or Input #2. Upon the detection of this
signal, the amplifier turns on immediately. After approximately 10 minutes of no signal, the
amplifier will switch off. This mode requires the front panel POWER button to remain in the ON
position.
Trigger allows external ON/OFF control of the amplifier, through the 12V Trigger Input, found
immediately to the left of this selector. This input looks for a 12VDC signal from an external device
to turn this amplifier on and off. This mode requires the front panel POWER button to remain in the
ON position.
#11) Speaker “A” Output
This binding post set provides connections for speakers controlled by the “A” pushbutton on the
front panel Speaker Selector. These binding posts accept banana plugs, spade lugs, or bare speaker
wire up to 12AWG. Use extreme care when connecting bare speaker wire to ensure that small
strands to not short between adjacent terminals. Left and right speakers should be connected as
normal for stereo operation. For bridged mono operation, the two (RED) positive terminals only are
used. See the notation on the back panel for proper connection.
#12) Speaker “B” Output
This binding post set provides connections for speakers controlled by the “B” pushbutton on the
front panel Speaker Selector. These binding posts accept banana plugs, spade lugs, or bare speaker
wire up to 12AWG. Use extreme care when connecting bare speaker wire to ensure that small
strands to not short between adjacent terminals. Left and right speakers should be connected as
normal for stereo operation. The “B” output is not to be used for bridged operation.
#13) Line Cord Input / Fuse Holder
This provides a standard IEC type AC power cord connection. This removable type cord is
convenient in certain installation applications, as it allow the power cord to be routed into racks or
cabinets at an early stage, with connection of the amplifier later. A 72” cord is included with each
unit, exact replacements are available at MCM Electronics or a variety of electronic/electrical
retailers.
Fuse Holder
Amplifiers are shipped with preinstalled fuses that are the appropriate size for 115VAC operation. If
the amplifier is to be operated at 230VAC, the fuse should be replaced with the proper size. Fuses
are In the event that that fuse blows, only replace with a fuse of the same type and amperage
rating. MCM Electronics recommends Littelfuse 213 Series, miniature 5mm x 20mm Slo–Blo®
replacement fuses.
Model #
115VAC
Operation
230VAC
Operation
SLA150 4A 2A
SLA250 6.3A 3.15A
SLA470 10A 5A
#14) Voltage Input Selector
This selector allows use of the amplifier virtually any place in the world. The default setting for use
in North America is 115V (switch in the up position). However it is recommended to verify this prior
to connecting power. Note that improper power selection can cause immediate and permanent
damage to the amplifier, even if the main power switch is not turned on.
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